What is the meaning of addition of charges?

Explanation

1) Electric charge is a scalar quantity.
2) The total charge of the system is obtained b adding charges algebraically.
3) If a system contains n charges `q_(1), q_(2), q_(3),`……………`q_(n)`
`therefore Q = sum_(i=1)^(n)q_(1)`, where, i=1,2,3,...........n
Proper signs have to be used while adding th( charges in a system. For example, the total chargf of a system containing five charges + 1, + 2, - 3 + 4 and - 5 is some arbitrary unit is (+ 1) + (+ 2) + (- 3) + (+ 4) + (- 5) = -1 in the same unit.